20+ Recruit CRM Interview Questions and Answers

There are several types of concrete, including plain, reinforced, pre-stressed, and lightweight.

• Plain concrete is the most basic type and is used for general construction purposes.

• Reinforced concrete has steel bars or mesh embedded in it to increase its strength.

• Pre-stressed concrete is compressed before use to increase its strength and durability.

• Lightweight concrete is made with lightweight aggregates, such as expanded clay or shale, to reduce its weight and increase its in...read more

The slump value for pumpable concrete varies depending on the mix design and application.

• Slump value is the measure of the consistency of concrete.

• Pumpable concrete typically has a higher slump value than traditional concrete.

• The slump value for pumpable concrete can range from 150mm to 200mm.

• The mix design and application will determine the appropriate slump value for pumpable concrete.

Tests carried out on aggregates

• Sieve analysis to determine particle size distribution

• Water absorption test to measure the porosity of aggregates

• Aggregate crushing value test to measure the strength of aggregates

• Los Angeles abrasion test to measure the resistance to wear and tear

• Soundness test to measure the resistance to weathering

• Alkali-silica reaction test to determine the potential for harmful chemical reaction

• Organic impurities test to detect the presence of organic matte...read more

Tests used for checking the bearing capacity of soil include plate load test, standard penetration test, and cone penetration test.

• Plate load test: Measures the load-bearing capacity of soil by applying a load on a steel plate placed on the ground surface.

• Standard penetration test: Determines the resistance of soil to penetration by a standard sampler driven by a standard hammer.

• Cone penetration test: Measures the resistance of soil to penetration by a cone-shaped penetromete...read more

I have used M50 grade of concrete in a construction project.

• I have experience in working with high-grade concrete such as M50.

• I have knowledge of the properties and characteristics of different grades of concrete.

• I have worked on a construction project where M50 grade of concrete was used for the foundation.

• I understand the importance of using the right grade of concrete for different types of structures.

Slump is measured by placing a slump cone on a flat surface and filling it with concrete. The cone is then lifted and the slump is measured.

• Place a slump cone on a flat surface

• Fill the cone with concrete in three layers

• Compact each layer with a steel rod

• Remove the excess concrete from the top of the cone

• Lift the cone vertically and measure the slump

• Repeat the process for consistency

W/c ratio is the ratio of water to cement in concrete. Admixtures like superplasticizer can improve concrete without changing w/c ratio.

• W/c ratio is a crucial factor in determining the strength and durability of concrete.

• It is the ratio of the weight of water to the weight of cement used in the mix.

• A lower w/c ratio means stronger and more durable concrete.

• Admixtures like superplasticizer can improve workability, reduce water content, and increase strength without changing w/...read more

Draw the work breakdown structure for a ROOM with foundation

• Foundation: excavation, concrete pouring, reinforcement

• Walls: framing, insulation, drywall

• Roof: framing, sheathing, shingles

• Flooring: subfloor, flooring material

• Electrical: wiring, outlets, switches

• Plumbing: pipes, fixtures

• Finishing: painting, trim, hardware

Project management refers to the process of planning, organizing, and overseeing resources to achieve specific goals within a defined timeline.

• It involves defining project goals and objectives

• Creating a detailed project plan with timelines and milestones

• Assigning tasks and responsibilities to team members

• Monitoring progress and making adjustments as needed

• Ensuring that the project is completed on time, within budget, and meets the desired quality standards

• Examples include con...read more

SFD and BMD are diagrams used to determine the internal forces and bending moments in a beam.

• SFD (Shear Force Diagram) shows the variation of shear force along the length of the beam.

• BMD (Bending Moment Diagram) shows the variation of bending moment along the length of the beam.

• SFD and BMD are important in designing and analyzing structures.

• SFD and BMD can be used to determine the maximum shear force and bending moment in a beam.

• SFD and BMD can also be used to determine the l...read more

Bleeding is the process of removing excess air from a hydraulic system.

• Bleeding is necessary to ensure proper functioning of hydraulic systems.

• It involves removing air bubbles from the system by opening valves or using a vacuum pump.

• Bleeding is commonly done in brake systems to ensure proper braking performance.

• It can also be done in cooling systems to prevent overheating.

• Bleeding is important to prevent damage to the system and ensure safety.

Design of slab and beam involves calculating loads, selecting materials, and determining dimensions.

• Calculate loads on the slab and beam

• Select appropriate materials for the slab and beam

• Determine the dimensions of the slab and beam

• Consider factors such as span, deflection, and cracking

• Ensure compliance with building codes and regulations

Segregation refers to the separation of different components or materials from a mixture.

• Segregation can occur due to differences in size, density, or shape of the components.

• Examples of segregation include the separation of oil and water in a mixture, or the separation of different sized particles in a granular material.

• Segregation can have negative effects on the quality and consistency of a product, such as in the case of uneven mixing in pharmaceuticals or food products.

• P...read more

A tower crane is a type of crane used in construction to lift heavy materials and equipment to great heights.

• Tower cranes are typically used in high-rise building construction.

• They have a long horizontal jib with a hook on the end that can be raised and lowered.

• The crane is mounted on a large concrete base that is anchored to the ground.

• The operator sits in a cab at the top of the crane and controls its movements.

• Tower cranes are essential for lifting heavy materials like ste...read more

Civil engineering is a branch of engineering that deals with the design, construction, and maintenance of infrastructure projects.

• Involves designing and constructing buildings, bridges, roads, dams, and other structures

• Focuses on ensuring structures are safe, functional, and sustainable

• Requires knowledge of materials, construction techniques, and project management

• Involves collaboration with architects, contractors, and government agencies

• Examples include designing a new high...read more

Initial setting time is the time taken for the cement to harden to a certain degree, while final setting time is the time taken for the cement to completely harden.

• Initial setting time is typically around 30 minutes to 1 hour after adding water to the cement.

• Final setting time is usually around 2 to 4 hours after adding water to the cement.

• Setting time can vary based on the type of cement and environmental conditions.

• Setting time can be tested using Vicat apparatus.

The question is asking for the Wms of all activities.

• Wms stands for Work Measurement System, which is a method used to measure the time and effort required for different activities.

• The answer should provide the Wms values for each activity mentioned.

• Example: Activity 1 - 5.2 Wms, Activity 2 - 3.8 Wms, Activity 3 - 6.1 Wms

The base in civil foundation refers to the lowest part of the foundation that supports the structure above it.

• The base is the part of the foundation that is in direct contact with the soil or rock below.

• It is designed to distribute the weight of the structure evenly and prevent settling or shifting.

• The size and shape of the base depend on the type of soil and the weight of the structure.

• Examples of types of bases include spread footing, mat foundation, and pile foundation.

Electrical load calculation is crucial for construction works to ensure proper electrical system design and prevent overloading.

• Determine the total connected load of all electrical equipment and appliances

• Calculate the demand load based on the expected usage of the equipment and appliances

• Consider diversity factors to account for the likelihood of all equipment being used simultaneously

• Add safety factors to ensure the electrical system can handle unexpected loads

• Examples of e...read more

Voltage calculation involves determining the potential difference between two points in an electrical circuit.

• Voltage is measured in volts (V).

• The formula to calculate voltage is V = IR, where V is voltage, I is current, and R is resistance.

• Voltage can also be calculated using Ohm's Law: V = I x R.

• Voltage can be determined using a voltmeter or by measuring the potential difference across a component.

• Voltage calculations are essential in electrical engineering and troubleshoot...read more

There are several types of calipers used in plumbing.

• Vernier caliper

• Dial caliper

• Digital caliper

• Inside caliper

• Outside caliper

• Depth caliper

Min column width refers to the smallest width a column can be resized to in a table or spreadsheet.

• Min column width prevents columns from becoming too narrow to display content properly.

• It ensures readability and usability of the data in the table.

• For example, in Microsoft Excel, the default min column width is 8.43 units.